Antifriction bearing



J. F. ocoNNoR Fi''e'd Nov. 19. 1923 i ANTIFRcTIoN BEARING May 29, 1928.

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Patented May ze, 192s.

@we v N les 5'Al`psee1iredto the uppersurjface 'of the trucl;

...Tonner l;aCortinesoropinando, ILninoIs; Assieme, BYMEsNEAssmNi/inurs, To i er f W. 1r.'r.t`I NER,'r1IJC.,1A fConPonn'rrQNQEDLWARE] ff if f1.1 r

Aspplcatonl'ed November 2l-9i 1923. Serial N'o. 6755449;

'y if anti-friction bearings.' y l v lOne object vof thejinvention 1ste"provide an anti-friction side bearing for railwayv ears 4This inventionrelates to improvements in.

5 so' designedl as" to Vpossess lunusual strength,

`whereby it service; i

l'More specifically'anfobject 'of the invenis' 'especially adapted `forheavy 'i tion is'top'royide a bearing of the character i uindicatedfadapted to he "attached tohtlie ftruclr' bolster of--a'railway car, as a unit,

wherein a'sliding upper bearing plate which i directly 'engagestheanti-friction eleinentis adapted to coact with thebodybolster,"therejing onft-hebodybolsteri 2Q provided.'forLVreturningthe antifriction` el'eni'ent to centered 4@ach actuation of thebearing;

' v:Otherfolojectsandj advantages ot 'the invenscription and "claims``hereinatter following. In' 'the 7 draw'vin'g forininga part fot l'thisn specification,Figure1 is a vertical, sectional Yl'yietytakenl'parallel tothe lengtlioffthe car,-k 3oy'through."the'endsof the 'bodyandy truck 'connection therewith; ',Figure' isa top planfholsters and shot'ving'uiny iinproven'ients in Viewv 0i thebarns ebene@Fleurs 1 And i 'Figure 3` isa Vertical, sectlonal View chrrei Inf lsaiddrawingyl indicates 'the under-v the" upper side an-v opposed' ytrucklbolster.

Infth'e instance Shown; the iinproyed "side fliearing'is applie'dto thetr'uckrbolster.

A -Tlfiipotedbearing comprises; broadly',-

" a. housing? or retaininfrnieinhe'r A; a lol'ottornv l bearing`pitite-5:13,; valia ti friction elein'entC; aslizdingupper Wear'pla'teDf; a pair of cene Thefsteininelwebsr A fis-Shown, is @if t :generallybox-like forth; hayingfa` bottoni 'l'fll Hilda pail* f lue'asor ea'rilli011e at ,leachfendyby which the retaining linei'nloer adapted to beriyeted orotheryvrse rigidly y fli'lninating the usual teinpered steelfacpositi'on after' v teringfsprings twol pairs' of spring f thesanie.f, The bottoni bearing plate B is'oi subst-en f tially rectangularoutline and has an upper face,J ciu-ved `longitudinally` of the housingon an are 'of relatively great "radius las 'indig cated atl?.v lTheunderfaceofthe-plate is i flat and'beahrs directly on the bot-toni Walll2 of th'efliousing. The plate -B' extends from remaining edges fequally spacedi respectively c irornlth'e 'endWalls of theliousingasclearly shown 1n Figurewll 'To lpreventy displace-A ment of the plate Blengthwise of thehous` s i 'b olster, At theupper end, leach side Walll'y 'V18 1s i off set outwardly, thereby providing` i a pair of pockets16"-16, 'one'at each sideof .the nieniber A, extending longitudinally of'onefside Wall to the otherand-has :the "two ing; the fo'rnier ispreferably providedwith I a pair. of depending, .'spac'ed, 4e'entrajllugs 185-18 :engaging Within lsuitaliile i* openings formed '1n'thejbottom Wall 12. Adjacent each vSiam-n1, the pnt@ B is provided/wah"a'pairfoi'- upstanding knobs or teeth 1,9;19A adaptetto engage Wit-hincorresponding openingsQOf-Qllfformed in the bottoniof. the`anti-friction element VCl to thereby. prevent.'

respect to the housing L y l Theanti-friotiion element proper C yis'inithe vform of a rolling rocker and is formed with cy-li'ndric top andhottie-in hearing.;"sur-`l` LCS @rand 22g adaptedtocolzetjrespeo tivelyWiththe plates Briand fD; The hear-` rectangular' fforrn and presents'-a lsplierical 'upper surfac'eQS of Very long radius, adapted to coac'twith the undersurlface of the" parts' or distortion ofthefholstemaret'aken y ing surface is all tiniesassuredr'In` other" Words, .if.thel under-surface of the body holster i's "disposed angulaily with n yy Y f 5 vl v, i reiterence' to the upper g bearing surface `of thelatter from being shifted*v hodilywith The sliding platre Dis alsoofsuhsbaiitiallyi* Byythe 'prOyiK-sion o'l the upper sider with di ma'sphericalup'per sur-tare adapted to'engage with* the *under-surfacef ofthefftruckI 'f Walllg, yeitilcallydisposed; spaefedside Wallsycare.ot-"anda` central Contact between-the 105 13 13, .verticallydisposedv7 spaced eiifd Walls antifrict-'ion element 'andthe (reactinghear-y l y,

` 'the .truck boisage@ body bolster wai @oit tac-tvvith and exertpressure on the upper slidingwear plate approximately at the cen-4` teror at a point closely adjacent'the center fof the -platefand thel forceWill `act substan-r tially through `the center of the, anti-frictionelement.

n It will be evident that by forming the plate with an upper'surfaceofspherical '.vform', proper contact ofthe body bolster therewith isA'assured Vand i very simple and efficient means is provided ffor taking`care of angularity ybetweenthe opposed' bearing "surfaces of the 'bodyand truck holsters.

This means replaces the more complicated kmechanism now Y 'generallyusedv involving the mounting ofthe anti-friction element-vin acradle'vo'ron `a .corresponding additional elementv ypivotally vmountedwithin lthe `base casting-vorv retaining member directly secured n, totheV bolster.l I

Theunder-surface 2.4 of theiplate'D `co- 3 actsfivith' .the surface 21ofthe anti-friction theliousing on v an arcv of relatively long radius,the curyature being preferably the' -same as that of the bottom plate B.

element'and is also curved.longitudinally of j cent .each side Wal-l 13of the housing',`the plate D is reduced in thickness as"clf early shownvin FigureA 8, therebyQpro-viding a flange 25 extending over the,corresponding pocket .16V and over-liaging the side Wall of i i thepocket. Adjacent each end of the roller,

the plate D isprovided With a pair of depending knobs lor teeth' 26-26adap-ted to engage kWithin corresponding openings 27-4 27 provided inthe top of the anti-friction' element C to control the movement ofy theylatter and effec-t return ofthe same to centeredr position Awith theplate D. The plate v ears 28 depending fromgeach flange 25, d is- D-isalso providedjwith a `pair of `spaced posed-transversely) of the housingand `eirf tending intofthecorresponding pocket 16.`

.p i *The ears/28' of each pair are disposed adja- 4 45 cent theopposite ends of each-flange, vand y each of the same isuprovided Withfa hori- ,l zontal, outwardly opening slot 29 adapted t to. accommodatethe. cylindrical body portion of the correspondingthimble F.

The thimbles `Fv are of like construction,

and arranged in pairs at. opposite sides of thev housing. yEach thimbleFL includes a relatively long, hollow', cylindrical'body' portion closedat,its outer `end and provided at its inner end Withl an annular flange.30. `Each thinible extends'through the slot in the corresponding ear 28andhas the flange 30 `engagingthe inner side ofthe ear. The

' outer end ofeac'h thinible isadapted to abut G0' thepartsA are innormal position.

the corresponding end of'the housing, when `One of thevspringsF isarranged at each sidey ofthe bearing and has its opposite ends disposedyinv the respective thimbles bearing on thefclosed end walls thereof andholding` .peredc i Y. The normal position, of the parts is as Larnacavnormal position.'v The parts` are so 'proportioned andI arranged thatthe yflanges-30 `of the 1 lrespective thimbles engage 'the correspondingears of the slide D when the louter the `same yielding Contact :yviththe' end y Walls ofthe liousing,'when the `parts are .in f

end of the thimbles` are in abutmentwwith the end Walls `of thehousing,fthus retaining the slide in rcentered position.

f `Tlieretaining elements G are ,in the form of rods, one being disposedat eaehsidevofl the housing,'extending through the. corre-y spondingspring E, alined Lopenings in the thimbles F yand the end Walls ofthehousing the opposite ends of the rod being `headed vover to retain-thesame in position. ItWill*`r be vevident tliatwhen the partsare-assembled y plate Dwvill alsobe retained iii assembled lrelation withthe housing thereby, and` in` Vturn retain the anti-frictiony eler'nent`Within the housing. f,

wvith the rods inzlixed'position,fjthe slide- By the'constructionandarrangement'def` scribed, I provide a side bearing havinganantifr-iction rocking eleinentfthat has arcs.

of unusually large radius, and wherein the l i over-all heightof.thebearingis maintained 'substantially constant duringr the entire op-,eration `of the safe,` by Vproviding bearing L surfaces of theproper'curvature on the ytop and bottoni 'Wear' plates'. 4

`'The top vand bottom anti-friction element therebetween may .be f madeof any suitable material but are prefl y 10,0v

erably constructed of steelv and .properly tem'- shown by the fulllinesfin' Figure 1. In this position, it is evidentgthat the slidingplate 105.'

D is supported slightly belovsr the under surfaceof the body bolster..Itwill beseen that` Wear plates and the upon approach of the bodyandtruckfbol-v `sters toward each other,`fthe spherical, upper" surfaceof the platev D will be engaged lby the body bolster and the pressurethereon properly centralized due tothe formation of the upper surface ofthe plate. When. the bearing is brought into action by the relative vradial movement and' approachof the body and truck bolsters, the lslideD Will bel moved stance, to the position indicated by the dotted linesvin Figure 1. It Will be evidentV that the rolling movementofthe'anti-frievtion element C Will be at all times positivelycontrolled by the knobs 26 engaging the re- 11:5l relatively tothehousing and theelement C yrolled to either sidefof'normah'asfor incesses at the upper side of the'elem'ent and -the knobs19engaging-.withinthe recesses at the bottom sidey of the same. #The limitof .the movement of the anti-friction' element is reached when the'samereaches the dotted' line "position shown inl Figure 1; Asithe Slidemoves to the dotted yline positiomthe thimbles at the right hand side ofthe bear`v king', as shown inl Figures l and- 2, Will be moved therewithby engagement of the ears 28 of the former With the flanges '30 of thelatter; thereby compressing the springs E. When the pressure on thebearing is removed, the slide vD will returnv to 'normal' position underthe influence of the springs E i i Ithrough the medium of the thimblesF. The

slide, in turn, eects return movement of the anti-frictiony element `toproperly Acentered position.

I have herein shown and described what` I now considery the preferredmanner; of carrying out my invention but the saine is merelyillustrative and I contemplate all changes l and modifications that comeWithin the scope of the claims appended hereto.

Iclaim:Y f y a f 1. yIn a side bearing, the combination With asupporting Wear plate fixed to the truck..

` bolster and having an upper curved bearing surface; of ananti-friction element having rocking movementon said Wear `plate;

inter-engaging means on said plateand element for controlling therockingmovement of the latter; a slide supported. upon said element and havinga bottom face adapted4 vto coact with said element, the slide being"normally free of engagement `vvith the i' y bolster, butadapted to bemovedto actuate saidelement by engagement Withl the body bolster;coacting means on said slide-"and 'i f element for effecting returnmovement of the element to normal position and controlling the rockingaction of said-.element during thereturn movement; andmeans forreturning said slide to normal `position after each y' actuation of thebearing.v

f 2. In aside bearing for railivay.cars, jthe t in one direction; springmeans for hold-ing i "said thimbles normally-separated;fand Iretainerrods extendingthroughsaid thimbles y a slide resting upon said element.and ,adapted to be yengaged by the body boland adapted to hold lallparts of said bearing assembled. In Witness that I claim kthe foregoingVI have hereuntosuhscribed my name this 13th day of November, v19723. i

JOHN F. ocoNNoii. f n

